Many Jews observe a weekly day of rest (the [[Sabbath]]) that begins shortly before sundown on Friday and ends after sunset on Saturday. During this time no work may be done, business transactions are forbidden, and light switches are not to be turned on or off. Jews celebrate the Sabbath by lighting candles before the Sabbath, singing songs, going to synagogue, commonly referred to as shul, and learning. This is based on the fourth commandment of the old testament, although the rules have been expanded upon beyond what is commanded.<ref>Exodus 20:8-11</ref> | Many Jews observe a weekly day of rest (the [[Sabbath]]) that begins shortly before sundown on Friday and ends after sunset on Saturday. During this time no work may be done, business transactions are forbidden, and light switches are not to be turned on or off. Jews celebrate the Sabbath by lighting candles before the Sabbath, singing songs, going to synagogue, commonly referred to as shul, and learning. This is based on the fourth commandment of the old testament, although the rules have been expanded upon beyond what is commanded.<ref>Exodus 20:8-11</ref> |